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ZSheets-Sheet 1. F. G. EBERLEY 8v R. RICHTER.

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7 OALORIPERE. No. 267,781. PatentedNov. 21, 1882.

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2 Sheets-She t 2. P..G. EBERLEY 81; R. RICHTER.

GALORIPERE.

No. 267,781; Patented Nov 21, 1882.

UNITED STATES PATENT OFFICE.

FRIDEBIOH O. EBERLEY AND RUDOLPH RICHTER, OF DENVER, COLORADO.

CALORIFERE.

SPECIFICATION forming part of Letters Patent No. 267,781, dated November 21, 1882, Application filed March 22, 1882. (No model.)

. To all whom it may concern:

Be it known that we, FRIDERIGH O. EBER- LEY and RUDOLPH RICHTER, of Denver, in the county of Arapahoe and State of Colorado, haveinvented certain new and useful I m provements relating to ()aloriferes, of which the following is a specification.

The accompanying drawings illustrate our improved calorifere, and represent what we consider the best means of carrying outour invention.

Figure l is an end elevation. Fig. 2 is a horizontal section taken across the furnace. Fig. 3 is a vertical longitudinal section. Figs.4 and 5 are sections showing the boxes and pipes.

Similar letters of referenceindicatelike parts in all the figures.

In our invention we provide an arrangement of sheet-iron or clay pipes and boxes for the purpose of conveying smoke and heat through them until the latter have distributed and communicated the heat over the whole surface and then enter the smoke-flue through which the same is carried into'the open air. This calorifere enables the operator to burn common soft coal or coke, as such maybe had'conveniently, and as it is frequently necessary to con- 1 struct the apparatus in .such a manner as to rounding or inclosing walls b b b of common bricks, and convey fresh cold air through underground channels a a from the outside of the building into the space inclosed by the walls b b b, whence it is carried upward, having passed in contact with boxes 9 g g and pipes f f f and beenwarmed thereby, and bring it into the room intended for its reception. These pipes f are all arranged in such a manner that, as nearly as possible, the upper pipe is placed right over the opening formed by two lower ones, and the air is caused to move in azigzag path, thus bringing it in contact with the entire heating-surface in its course upward. v

To facilitate the thorough heatingofthe room, we provide four flues, c 0 c 0, on the corners of the inclosing walls b b b, having openings 01 d at at their lower ends into the space formed by the walls b b b, thus allowing the cold air,whirh is naturally'heavier than the hot air, to descend and come in contact with the said calorifere, to be either consumed by the fire or after being warmed toasoend again as hot air, thus completing the circulation. We provide besides the undergronnd channels a a and fines c c c openings r. 'r r of convenient size in the walls b b I) to allow cold air to enter the inclosure of the furnace.

The conveying-pipes 0 0 0 are represented as of cast-iron and the boxes 99 g, &c., and pipesfff as of sheet-iron; but all these can be made of earthenware in the manner as shown in conveying-pipes 0 0, thus rendering a heat preferable for certain purposes-t'or instance, in malt kilns, where a mild heat will produce an article of more value than a strong heat.

Our furnace is constructed in convenient form and size, with an ash-pit, e, inr-losed by cast-iron outside walls, and a grate, 5p, over it. The sides of these walls are provided with ways 1, in which move slides It, (shown by dotted lines in Fig. 3,) intended to cover the openings m m m, when desired. These slides are provided with rods passing through the brick .walls b b and furnished with grasping means and is perforated in the apex and furnished with a straight piece of pipe upward to receive the conveying-pipe o 0 0. This conveying-pipe 0 0 0 is to be made with elbows, as

shown, and straight pieces, as may be dictated by necessity or convenience, the joints in the several sections of the same being packed with fire-clay and bolted together through flanees. This pipe 0 0 0 (or the elbows therein) is t'nither provided with openings and covers pp on the lower side, as shown, to admit of being cleaned out, if necessary, and is supported and kept in position by a cast-iron column of suitable size. The front of the furnace is formed by a cast-iron lace-plate, having hinge-hooks and catches cast on it solid,-

for the reception of cast-iron doors, with revolving valves for the admittance of air either above or below the grate. Upon this pipe 0 0 0, or against the same at the flange Z, the box gis placed, and fastened and provided with holes socketed, and pipes s s 8, extending through brick walls I) I), for cleaning purposes, and also socketed holes for horizontal conveying-pipesfff, and a cover, tt, for the openings 8 s, to avoid counter drat'ts. From the box gthe conveying-pipesfffare carried into a similar box, g, opposite the first one, g, the size of these pipesfff being determined by the area of the cross-section of the above-mentioned pipe 0 0 0. From the box g pipes lead to the box 9. The area of the cross section of the upper set of pipes is equal to the area of cross-section of the lower set of pipes, although this second row of pipes contains one more pipe than the firstrow,fff, and is divided in such a manner that the pipes in the second row will, as much as possible, be placed over the openings between the pipes in the first row. Thus these pipes are continued to such a height as may be necessary to obtain the required amount of heating-surface. Atter placing the pipes ,in proper position the receivingbox gis placed against the flange at Z or upon the flange on top of conveying-pipe 0 0 0. The pipes f f f are placed over the collars provided for the purpose, the required height built up, box g placed on top, the larger-sized pipesf fbuilt under it on the box g, &c., until the whole is completed, when the lastbox, 9, receives the smoke-pipe to convey the smoke a liberal flow of the air to be warmed'on all sides of the boxes and make the whole surt'aeethereot'at'ailableinheatingtheair. There is liberty for the boxes to slide on the brackets to allow for expansion and contraction. The fact that the boxes are separate and distinct allows for an independent motion in accommodating the expansion. It also makes the top and bottom of each box an effective heating-surface.

To claim as our invention- 1. In an air-heating, furnace, the serpentine pipes 0 between the tire-pot and a series of straight flues,f, and boxes g g, 850., and having cleaning-holes with caps 19 at the lower bends, combined and arranged as specified.

2. The separate boxes 1 g g, held away from inner face ot' the wall I) by the brackets on, in combination with the fire-pot and inclosing masonry wall, and with the connecting-pipes of, as herein specified.

3. The combinationot'the pipesf, box orfluehead g, having cap-passages s and the flue 0, provided with cleaning-openings having caps 19, substantially as set forth.

In testimony whereof we have hereunto set our hands, at the city of Denver, Colorado, this 15th day of March, 1882, in the presence of two subscribing witnesses.

FRIDERICH G. EBERLEY. RUDOLPH RICHTER.

Witnesses CARL BRUEHNE, FRED. KIELMEYER. 

